Title :
Gain-switching and mode-locking of quantum cascade lasers
Author :
Paiella, Roberto ; Capasso, Federico ; Gmachl, Claire ; Bethea, Clyde G. ; Hwang, Harold Y. ; Sivco, Deborah L. ; Baillargeon, James N. ; Hutchinson, Albert L. ; Cho, Alfred Y. ; Liu, H.C.
Author_Institution :
Lucent Technol. Bell Lab., Murrey Hill, NJ, USA
Abstract :
We demonstrated gain-switching of several 5 and 8-μm quantum cascade lasers. In particular, these devices were driven with fast (- 90 psec) electrical pulses produced by a commercial step-recovery diode (comb generator). The corresponding optical pulses were directly measured with a high-speed quantum-well infrared photodetector (QWIP), a photoconductive detector also based on intersubband transitions in semiconductor quantum wells
Keywords :
electro-optical switches; laser mode locking; laser transitions; laser variables measurement; photoconducting devices; photodetectors; quantum well lasers; 5 mum; 8 mum; 89 ps; 90 ps; comb generator; electrical pulses; gain-switching; high-speed quantum-well infrared photodetector; intersubband transitions; laser mode-locking; optical pulses; photoconductive detector; quantum cascade lasers; semiconductor quantum wells; step-recovery diode; Frequency; High speed optical techniques; Laser mode locking; Laser transitions; Nonlinear optics; Optical modulation; Optical pulses; Quantum cascade lasers; Quantum well lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Society 2000 Annual Meeting. LEOS 2000. 13th Annual Meeting. IEEE
Conference_Location :
Rio Grande
Print_ISBN :
0-7803-5947-X
DOI :
10.1109/LEOS.2000.890737
